Inventions 1900 to 1990 By 07053.casp Jan 1, 1901 vacuum cleaner Feb 2, 1902 air conditioning; automated tea maker Mar 3, 1903 electrocardiogram; first powered flight Apr 4, 1904 radar; tea bags May 5, 1905 plastic Jun 6, 1906 radio broadcasting Jul 7, 1907 electric washing machine Aug 8, 1908 coffee filter; water coolers; paper cups Sep 9, 1913 crossword puzzles; bras; zips Oct 10, 1916 sonar Nov 11, 1920 hair dryers; kiss-proof lipstick Dec 12, 1921 robots; insulin Jan 13, 1924 frozen food Feb 14, 1925 television Mar 15, 1926 aerosol sprays Apr 16, 1927 ‘Talkies’ at the movies May 17, 1928 penicillin Jun 18, 1930 jet engine; mechanical toothbrushes; Scotch tape Jul 19, 1932 parking meter Aug 20, 1935 electric guitar Sep 21, 1936 sun tan lotion; electric blanket Oct 22, 1938 ballpoint pen; photocopying Nov 23, 1939 helicopters Dec 24, 1942 first nuclear reactor built; Jan 25, 1946 microwave ovens; automation; Bikini; Tupperware; Tupperware Parties Feb 26, 1947 transistors; holograms; mobile phones Mar 27, 1948 frisbees; velcro; general purpose computers; contact lenses Apr 28, 1950 credit cards May 29, 1951 Tetrapak cartons of milk Jun 30, 1952 wide-screen cinema Jul 31, 1953 transistor radio Aug 1, 1954 solar cell Sep 2, 1955 atomic clock Oct 3, 1956 video tape recorder Nov 4, 1957 satellite Dec 5, 1958 video games; modems Jan 6, 1959 car seat belts Feb 7, 1960 cardiac pacemaker; laser Mar 8, 1961 Man in Space Apr 9, 1964 computer mouse; miniskirt May 10, 1965 optical disc; bay buggy; HTML Jun 11, 1966 pocket television Jul 12, 1967 portable calculator Aug 13, 1968 biometrics; Workmate; artificial heart Sep 14, 1969 the Internet; cash dispenser Oct 15, 1970 LED and LCD’s Nov 16, 1971 floppy disc Dec 17, 1973 barcodes; post-it-note; car airbags Jan 18, 1975 personal computer; laser printer Feb 19, 1977 MRI scanner; inkjet printer Mar 20, 1979 first personal stereo Apr 21, 1980 Hepatitis B vaccine May 22, 1987 disposable contact lenses Jun 22, 1989 1989 : World Wide Web